Resonant Atom-Dimer Relaxation in Ultracold Atoms

Understand

Three-body systems with large scattering length display universal phenomena associated with a discrete scaling symmetry.

• These phenomena include resonant enhancement of three-body loss rates when an Efimov three-body resonance is at the scattering threshold.
• In particular, there can be resonant peaks in the atom-dimer relaxation rate for large positive scattering length.
• We improve upon earlier studies and calculate the atom-dimer relaxation rate as a function of temperature using a Bose-Einstein distribution for the thermal average.